Blood Glucose Levels Flashcards

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What is blood glucose?

The amount of glucose (a sugar) dissolved in your blood. It fuels respiration in cells.

To keep a steady energy supply for cells. If it is too low you feel weak. If it is too high it can harm the body.

The pancreas.

Insulin lowers blood glucose. Glucagon raises blood glucose.

It makes body cells take in more glucose. The liver and muscles store extra glucose as glycogen.

It tells the liver to break down glycogen to glucose. The liver releases the glucose into the blood.

It rises. The pancreas releases insulin. Cells take in glucose and the liver stores it as glycogen. The level goes back to normal.

It falls. The pancreas releases glucagon. The liver turns glycogen into glucose and releases it. The level returns to normal.

A storage form of glucose. It is stored mainly in the liver and in muscles.

A control system that reverses a change. If blood glucose rises, responses lower it. If it falls, responses raise it.